Sandcastle Tide Defense Checklist

Why use a checklist

Sandcastle tides are gentle but persistent. Most demo failures come from predictable oversights: moats without exits, dry thin crests, corners aimed at fetch, or decorations loaded before structural tests. This page combines written guidance with an interactive checklist you can tick mid-session.

Read Protect From the Tide for theory and Tide Erosion for flow behavior before your first audit.

Pre-audit setup

Build on Base Beach until you understand foam lines, then repeat on Barrier Beach where fetch increases. Mark your last observed high line with a temporary ridge using Digging Tools. Note wind and lighting phase—calm presentation still moves water steadily.

Structural checks

Confirm wall bases are thicker than caps (Build Strong Walls). Pack damp sand along toes facing moats. Verify buttresses exist on seaward corners, not just landward cosmetic faces.

Carved battlements should not be thinner than surviving merlons from a prior tide test. If unsure, defer Carving Tools detail until after this pass.

Moat and spillway checks

Moats must exit somewhere. Walk the channel floor—no dead-end pockets. Spill lips should be rounded outward per Carve Moats. If water pooled last cycle, deepen exits or partial backfill wide channels instead of digging narrower.

Interactive checklist

Use the embedded tool below during play. It mirrors the same steps speedrunners and educators use when demonstrating Sandcastle on Steam Deck or mouse-only setups.

Embellishment and collectibles

Move Shore Treasures off fragile caps temporarily if a major tide is imminent. Starfish pickups (Starfish Collectibles) can wait until after audits—they persist as unlock progress.

Post-tide review

After high water, photograph only the damaged faces. Repair with digging passes, re-run the checklist, and compare against prior cycles. Building Tips suggests limiting major redesigns to one face per tide.

Demo versus full game

Checklist logic applies to all announced layouts. Lagoon and delta beaches may add branch channels when the full game ships TBA—revisit spill prompts when those hubs update.

Related links

Continue to How to Play for session flow or Demo Download if you have not installed yet.

When to skip the checklist

Pure sandbox doodling on an empty flat does not need audits. Run the checklist when you care whether a structure survives the next high tide or before switching from Base Beach to Barrier Beach.

Team workflows

Streamers can read checklist items aloud while chat ticks boxes in the wiki component—useful for education streams on demo launch week.

Post-checklist carving ban

After ticking all items, avoid new carving until the next tide unless you reopen the checklist. Late vanity carving is a common cause of preventable merlon loss.

Checklist customization mentally

Add personal items like “remove loose shells from spill lip” if you decorate early. The wiki component covers universal steps; your notes can extend locally.

Barrier re-run rule

Anytime you switch from Base to Barrier, rerun the full checklist even if Base felt easy—fetch changes invalidate assumptions.

Print-friendly use

Some players print checklist sections for beach trips IRL—Sandcastle inspired real-world sandcastle engineering jokes. Digital checklist remains authoritative for demo patches.

Habit stacking

Pair checklist with tea breaks—finish checklist, sip, watch tide. Cozy games benefit from cozy rituals.

Checklist after decorations

If you decorate early anyway, rerun checklist focusing on spill lips and load on caps—common post-decor failures.

Closing synthesis

Make checklist reruns a habit whenever you change moat geometry or add height—small edits invalidate old assumptions quickly on Barrier Beach.

Final notes

Return to related hub pages when patches land—mechanics stay stable but tide timing or tool unlock order may shift in Steam news. Cross-link siblings in this category for moats, collectibles, and physics vocabulary. Pair reading with one in-game tide cycle so abstract advice becomes muscle memory on wet sand.